• 🏺 CAVES, COMMUNITIES AND CULTURAL MEMORY⠀
⠀
An archaeological site doesn’t stop changing once the excavation ends.⠀
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This week, we look at Ban Chiang through the memories of the people who live there, and at Sri Mahosot, where an ancient landscape remains part of contemporary worship and community identity.⠀
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Also this week:⠀
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🇵🇭 Rescue archaeology at a cave in Romblon⠀
🇮🇩 A possible Kadiri-era site in East Java⠀
🇻🇳 A new forest-and-heritage trail at Mỹ Sơn⠀
🇰🇭 Angkorian Buddhist sculpture⠀
📢 SPAFACON 2027 call for abstracts⠀
💼 New archaeology and heritage jobs⠀
💰 Grants, fellowships and PhD opportunities⠀
⠀
…plus archaeology and heritage stories from across Southeast Asia.⠀
⠀
Caves, Communities and Cultural Memory⠀
Southeast Asian Archaeology Newsletter | 21–27 September 2026⠀
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🔗 Link in bio / southeastasianarchaeology.substack.com⠀
⠀
#Archaeology #SoutheastAsianArchaeology #SoutheastAsia
  • One river in northern Vietnam has yielded a remarkable record of more than 2,000 years of boatbuilding.

From the bed of the Kinh Thầy River at Cầu Bình, researchers documented 23 boat remains, including eight virtually complete logboat hulls and fragments of bows, sterns and planks. Radiocarbon dates place most of them between roughly 700 BCE and 1500 CE. 

Many hulls showed signs of sophisticated work beyond simply hollowing out a tree trunk. The hulls could be widened during manufacture, while wooden thwarts or bulkheads helped maintain their expanded shape. Some boats also carried additional boards along their upper edges, attached through holes with fibre lashings.

Around 2,000 years ago, during the late Đông Sơn and Han periods, several examples reveal another solution: mortise-and-tenon joints locked with wooden dowels. One boat even combined these joints with lashing holes. In later centuries, other Cầu Bình boats were built without this particular system.

This shows that over 2,200 years, boatbuilders used, combined and abandoned different solutions while continuing a long tradition of wooden river craft in the northern Red River Delta.

Reference
Bellwood, Nguyễn, , Lê, Hung, & Calo. 2026. “A 2,200-Year Logboat Sequence (700 BCE–1500 CE) from the Northern Red River Delta, Vietnam.” International Journal of Nautical Archaeology.
DOI: 10.1080/10572414.2026.2717219

#VietnamArchaeology #SoutheastAsianArchaeology #MaritimeArchaeology #NauticalArchaeology #RedRiverDelta
  • 🏺 Palaces, Pots and Porcelain⠀
⠀
Xin Chào! 🇻🇳 It’s a very Vietnam-heavy week in Southeast Asian archaeology: imperial palaces, ceremonial architecture, ancient brick tombs, early tile kilns, Cham heritage and the return of a Đông Sơn bronze drum.⠀
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🔬 New research from Malaysia finds molecular evidence for dairy processing around 3,000 years ago.⠀
⠀
🏺 And in the Philippines, some very unusual earthenware decorated with fragments of Chinese porcelain tells a story about Manila, material culture and the early colonial encounter.⠀
⠀
There’s plenty more from around Southeast Asia in this week’s newsletter.⠀
⠀
Palaces, Pots and Porcelain — read via the link in bio.⠀
⠀
#Archaeology #SoutheastAsianArchaeology #VietnamArchaeology #MalaysiaArchaeology #PhilippineArchaeology
  • A 4.38-metre-long wooden rudder from the west coast of Sumatra is providing a rare glimpse of Southeast Asian seafaring around 1,300 years ago.

The rudder was recovered at the Bongal Site in Central Tapanuli, North Sumatra. Today the site lies inland, but geomorphological research suggests that in the 7th–8th centuries CE it was part of a shallow bay or estuarine environment.

The quarter rudder was carved from a single log and measures 4.38 metres long. Radiocarbon dating of the wood produced a calibrated date of 656–687 CE, making it the earliest securely dated rudder currently known from Southeast Asia.

Researchers also documented hull planks with raised wooden lugs, dowels and surviving palm-fibre ropes. These suggest that parts of these boats were pegged and tied together—a construction method archaeologists call the Southeast Asian lashed-lug tradition. Differences between the surviving planks even suggest that several vessels may have been present. 

Bongal also produced ceramics, glass, beads and coins pointing to connections with much wider exchange networks. The researchers do not argue that the Bongal boats themselves were making long-distance voyages across the Indian Ocean, but propose that locally constructed vessels formed part of a regional maritime network, moving through rivers and along Sumatra’s coast and connecting communities there to broader systems of exchange.

Reference
Mochtar et al. 2026. “Lashed-Lug Boats from the Bongal Site: New Evidence for Early Maritime Networks on the West Coast of Sumatra.” International Journal of Nautical Archaeology.
10.1080/10572414.2026.2714901

#SoutheastAsianArchaeology #Indonesia #Sumatra #MaritimeArchaeology #NauticalArchaeology
  • Betel, Boats and Border Stones is this week’s Southeast Asian Archaeology Newsletter.⠀
⠀
This issue starts with a fascinating new paper on ancient teeth from South Sulawesi, where unusual dental wear may point to the habitual sucking of whole areca nuts by pre-agricultural foragers.⠀
⠀
Then we move from teeth to timbers: lashed-lug boat remains from Bongal on Sumatra’s west coast, including a 7th-century quarter rudder, add new detail to Southeast Asia’s early maritime networks.⠀
⠀
And yes, there are more boats: Phanom Surin in Thailand and the Butuan boat sites in the Philippines both make appearances this week.⠀
⠀
Plus: Preah Vihear, Koh Ker, Prambanan, Đông Sơn drums, repatriation, digital heritage, and more.⠀
⠀
Read the full issue at the link in bio.⠀
⠀
#SoutheastAsianArchaeology #Archaeology #MaritimeArchaeology
  • People in Sulawesi may have been habitually using a neuroactive plant as far back as 25,000–16,000 years ago.

A new study in Science Advances examines two preagricultural foragers from South Sulawesi, Indonesia, separated by thousands of years but sharing an unusual dental pattern: deep, rounded, circumferential wear that does not match ordinary chewing. The researchers argue that the wear formed through repeatedly holding, sucking or gently gnawing a small, hard object in different parts of the mouth. 

Using LC-MS, the team detected arecoline—a characteristic alkaloid of areca, or “betel”, nut—in dental samples from both individuals. One came from Leang Bulu Bettue and dates to 25–16 ka; the other, from Leang Cappalombo 1, is associated with deposits dating to around 7.6–6.3 ka. 

This was probably not betel chewing in the form familiar today. Modern betel quid typically combines processed areca nut with slaked lime and other ingredients. To test whether a simpler practice was plausible, the researchers soaked intact areca nuts and applied the resulting solutions to cells expressing human receptors. The experiments showed that intact nuts could release physiologically active arecoline without slaked lime. Combined with the dental wear, chemical residues and experiments support the authors’ interpretation that these foragers habitually sucked whole areca nuts.

For now, the sample is just two individuals, and psuggestions that the nuts were used for stimulation, pain relief or medicinal purposes remain hypotheses. What the study does show is that habitual neuroactive plant use may reach far deeper into the hunter-gatherer past than the archaeological record had previously demonstrated. 

Reference
Brumm et al. 2026. “Betel nut sucking is the earliest recorded evidence for the habitual use of a neuroactive plant drug.” Science Advances.
10.1126/sciadv.aei1901

#SoutheastAsianArchaeology #Sulawesi #IndonesiaArchaeology #Prehistory #BetelNut
  • Twenty-two small beads can preserve the traces of a much larger world of movement and exchange.

A new archaeometric study examines beads excavated in 2023 at Khok Phithak, within the ancient city of Khu Bua in Ratchaburi, central Thailand. Khu Bua was an important urban centre associated with the Dvaravatī cultural sphere, enclosed by earthen ramparts and moats and situated within the Mae Klong river system. 

The researchers analysed 21 glass beads and one chalcedony/agate bead, combining microscopic observations with VP-SEM-EDS, LA-ICP-MS and micro-Raman spectroscopy. Manufacturing traces—including axial colour streaks and elongated bubbles—indicate that most of the glass beads were made by drawing glass into tubes or canes before cutting them into individual beads. 

Their chemistry indicates that nineteen beads belong to the m-Na-Al-1 glass subgroup, consistent with glassmaking traditions documented in South Asia, particularly the wider technological sphere of southern India and Sri Lanka. Together with their manufacturing technique, the authors associate these beads with the large-scale Indo-Pacific beadmaking tradition. 

However, one blue bead, B014, is made from plant-ash soda–lime glass with a broad western Asian affinity—although the study cannot identify a specific production centre. Another remarkable bead, B007, appears to have been wound from recycled iron-smelting slag, suggesting an entirely different production history.

Rather than evidence for primary glassmaking at Khu Bua itself, the authors interpret the assemblage as reflecting an inland centre of consumption and possibly redistribution, connected through maritime and riverine networks to much wider systems of Indian Ocean exchange. 

Reference
Risteka et al. 2026. “Production Technology and Provenance of Dvaravatī Glass Beads from Khu Bua, Central Thailand: An Archaeometric Study.” Heritage 9, 347.
10.3390/heritage9090347

#SoutheastAsianArchaeology #ThailandArchaeology #Dvaravati #KhuBua #ancienttrade
  • Small finds, big stories this week.⠀
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The latest Southeast Asian Archaeology newsletter focuses on Thailand, with newly reported rock art, worrying news of looting, and two new papers showing what archaeological science can reveal from humble materials.⠀
⠀
One study looks at prehistoric pottery from Don Up Mung in Nong Bua Lamphu, tracing differences in clay composition, firing and production choices. Another follows glass beads from Khu Bua in Ratchaburi into the wider world of South Asian glassmaking and Indian Ocean exchange.⠀
⠀
Also: a LOT of opportunities this week — jobs, scholarships, courses and calls for papers.⠀
⠀
Link in bio⠀
⠀
#SoutheastAsianArchaeology #Archaeology #CulturalHeritage #ArchaeologicalScience
  • Can inscriptions help reconstruct how a kingdom expanded across a landscape?

King Citrasena (Chitrasen, later known as Mahendravarman) ruled Chenla in the late 6th to early 7th centuries, during a period when Chenla’s influence was extending across parts of what are now Cambodia, Laos and northeastern Thailand. His reign is known partly through inscriptions recording religious foundations, royal achievements and other acts of authority. 

Pailoplee and Khatshima map 21 inscriptions from at least 19 locations associated with Citrasena, and asked if people were moving between these places, which routes would they have taken? To explore this, they use Least Cost Path (LCP) modelling in a GIS. LCP calculates routes that minimise the “cost” of movement across terrain.

In archaeology, this can help identify plausible corridors shaped by features such as slopes, river valleys and mountain barriers. These models show how movement could have been structured by the landscape under the assumptions of the model.

Across several scenarios, the reconstructed paths repeatedly concentrate around major river systems—especially the Mun River—and particular passes through the Phnom Dong Rek (Dangrek) mountain range. The authors also compare the modelled network with archaeological sites attributed to Citrasena’s period, many of which fall along these reconstructed corridors.

Where river navigation would have been difficult (such as the Khone Phapheng Falls), the authors propose that Citrasena’s forces may instead have moved overland along riverbanks, using waterways as natural guides through the landscape.

The placement of several inscriptions near river confluences also suggests that these locations may have been important for controlling movement, communication and exchange, not simply access to water.

Reference
Pailoplee, S. & Khatshima, K. 2026. “The role of King Chitrasen (Mahendravarman) in the expansion of the Chenla Kingdom: A study of inscriptions and historical geography.” Social Sciences & Humanities Open 14, 103503.
10.1016/j.ssaho.2026.103503

#SoutheastAsianArchaeology #Cambodia #Thailand #Laos #Chenla
  • Sometimes the biggest archaeological questions depend on evidence we cannot see during excavation.

Microarchaeology investigates archaeological deposits at microscopic and microstratigraphic scales. In Southeast Asia, this can be especially valuable because monsoonal wetness, tropical weathering, intensive land use and complex depositional histories can affect how archaeological evidence survives. 

Researchers can examine the surrounding sediment for traces of past activity and later disturbance. Methods discussed in this new paper include sediment micromorphology, laboratory micro-excavation, high-resolution imaging, FTIR microscopy and SEM-EDS. Depending on the context, microscopic evidence can help identify burning, trampling, plant processing, sediment movement and environmental change. 

The importance of that context is illustrated by work in northern Laos. At Tam Ngu Hao 2, microstratigraphy was used alongside lithological observations and dating to establish the stratigraphic context of Denisovan fossil evidence. At Tam Pà Ling, it has shown potential for investigating environmental seasonality and possible patterns of early modern human presence. These methods help archaeologists understand what happened to a deposit before drawing conclusions from what it contains.
 
The paper also introduces the Australian Microarchaeology and Palaeosciences Facility (AusMAP) and argues for greater collaboration, training and locally based microarchaeological expertise across Southeast Asia. 

Reference:
Hernandez et al. 2026. Scaling down to look further back: Southeast Asia, deep-time science and microarchaeology. SPAFA Journal 10.
10.26721/spafajournal.651369a4y8 

#SoutheastAsianArchaeology #Archaeology #Microarchaeology #Geoarchaeology #ArchaeologicalScience
Tuesday, September 29, 2026
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The mystery of the Vietnamese mummies

26 November 2007
in Vietnam
Tags: Dau Pagoda (temple)Ha Tay (former province)Hanoi (city)monksmummyNguyen Lan Cuong (person)Vietnam Institute of Archaeology
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The mystery of the Vietnamese mummies

24 November 2007 (Vietnam Net Bridge) – The Vietnam Archaeology Institute take on the conservation of two 300-year-old preserved bodies of monks. The two mummies are regarded as sacred objects and how they came to be mummified (embalmed, really) is a mystery.

The mummies return
Duc Hanh heads to Dau pagoda where where two mysterious mummies have lived in silence for 300 years Past a lake and a number of paddy fields, the Dau pagoda sits in isolation near the outskirts of Gia Phuc village in Ha Tay province.

Although originally built in the 11th century under the Ly Dynasty, the pagoda bears the hallmarks of Le-Nguyen dynasty in the 17th century as a number of renovations occurred at that time. Dau pagoda is officially named Thanh Dao Tu or Phap Vu Tu and is dedicated to the Goddess of Rain.

But I’m here to meet two monks, who are shrouded in mystery. At first glance you’d be forgiven for thinking these monks were just statues. But in actual fact these are a pair of monks, Vu Khac Minh and monk Vu Khac Truong, who lived in the pagoda more than 300 years ago, were embalmed and preserved after their death.


These figures are called ‘xa loi Phat’ in Vietnamese, which means, basically, the valuable remains of Buddha that cannot be burnt with fire, dissolved in water or damaged by the passing of time or inclement weather. In other words, the monks are mummies.

When I enter, the pagoda is rather quiet. A few pilgrims are around but the head monk is absent.
On the altar, the mummified monks sit cross-legged in a permanent state of Zen as sweet smelling incense wafts through the air.

Before passing away, Vu Khac Minh confined himself to a room to meditate in the tradition of Zen Buddhism. Legend has it he took one jar of water and one jar of oil inside and informed his disciples to only open the door 100 days after no sound had been heard from inside.

“If my body is undamaged, cover it with tree resin. If it’s smelly, bury it in the room,” his final message read.

After 100 days the room was opened and his dead body was covered with wax-tree resin using traditional lacquer techniques. How exactly he was embalmed is somewhat of a mystery.

According to Professor Nguyen Lan Cuong from the Vietnam Archeology Institute, two monks were embalmed using different techniques.

“In most cases, people have to pull out the body’s internal organs and soak the body with chemicals before embalming, but I believe nothing has been drawn from the monks’ bodies. There is no sign of any chemicals except the waxy tree resin that was used and the statues have been displayed in open-air for 300 years,” says Cuong.

“Their bodies are well preserved thanks to the multi-layered coat of tree resin, cloth and paper. We know of traditional lacquer’s durability after finding lacquered cups in ancient tombs in Chau Can (Ha Tay province) which are 2,000 years old.”

Lacquer artist Dao Ngoc Han claims that not only is the lacquer coat an incredible feat, but the unknown craftsmen’s artistic sensibilities show real talent.

The two statues have been through the wars, quite literally, and survived some bad spells of weather.

“Two French soldiers smashed the knees of Vu Khac Minh to examine inside and both monks were damaged during heavy floods in 1893,” says Lai, a 78-year-old devout Buddhist. “The Vu Khac Truong mummy is clearly damaged with a lot of visible cracks and decay.”

This despite the fact that in 2003 a team from Vietnam Archaeology Institute and Vietnam History museum led by professor Nguyen Lan Cuong repaired the two statues. As I leave Lai is reciting Buddhist scriptures by the monks, and while a watchful eye is necessary, further and regular preservation is also required to ensure these precious and mysterious mummies continue to stand the test of time.

Getting there to Dau Pagoda

Dau pagoda is in Gia Phuc village, Nguyen Trai commune, Thuong Tin district, Ha Tay province, about 30km south of Hanoi. From the city centre, take the Giai Phong road for 15km, then turn right and after 13km you will come to a dyke, turn left there and you’ll find the pagoda on your righthand side 2km further along – you can’t miss it!

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